多光谱CCD相机配准的图像校正  

Image rectification of multi-spectral CCD camera registration

作　　者：郭悦[1] 杨桦[1] 

机构地区：[1]北京空间机电技术研究所,北京100087

出　　处：《光学技术》2003年第2期229-231,共3页Optical Technique

摘　　要：通过分析线阵CCD的成像过程,对多光谱CCD相机成像的彩色图像合成方式进行了研究,提出了一种处理方法。通过将各谱段CCD的每个像元信号分别扩展成一个二维像素数组后再进行彩色合成,尝试了利用后期处理的方式校正多光谱相机的配准偏差,改善了相机彩色合成图像的质量。结果表明,这种对CCD信号进行处理的合成方式为空间遥感相机的研制提供了一种技术手段,既能减小配准偏差的影响,同时又能够在不改变相机性能的情况下改善相机输出彩色图像的质量。Registration is an important technology of multispectral CCD camera. The image procession of the camera is analyzed, and a useful method to get the multispectral images is gained. Before composite, each pixel signal of CCD would be expended to a twodimensional value array, which is called imagepixelarray. Each imagepixelarray is composed of signal value repeating for one pixel of CCD. During the compounding, the relative position of singlespectral images should be changed and moved with step by one imagepixel according to the error of registration.Compare to the general method, more information could be got from new program and less work of calculation should be done. Using this imagepixelarray to process the image, more details could be work out from the composed image. In the study of CCD camera, registration usually is a complicated work. With this method, the effect of registration error will be decreased, the technology of registration will not be complicated, and more details of multispectral image could be displaced at the same time. 

关 键 词：图像校正 多光谱相机 CCD配准 像素数组 

分 类 号：TB852.1[一般工业技术—摄影技术] TN386.5[电子电信—物理电子学]